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Patented Oct. 19. 1869.

H. M. BEIDLER Lamp Burner.

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Letters Patent No. 95,870, dated October 19, 1869.

LAMP-BURN ER.

The Schedule referred to in these Letters Patent and making part of the same.

To all whom it may concern:

Be it known that I, HENRY M. BEIDLER, of Philadelphia, in the county of Philadelphia, and State of Pennsylvania, have invented a new and useful Improvement in Burners forKerosene-Lamps; and I do hereby declare that the following is a full, clear, and enact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, in which- Figure l is a vertical section of my burner, and

Figure 2 is a bottom view of the same, detached from its base-ring or plate, and inverted.

The object of my invention is to provide a burner that may be applied to any ordinary oihlamp, and that will cause kerosene-oil to burn therein, producing a clear white. flame, free from smoke or smell, without the use of a glass chimney or globe.

I screw into the top of the oil-reservoir of any ordinary oil-lamp, a hollow plug, a, through which a flat wick-tube, b, is inserted.

In said hollow plug the ratchet-wheel c, for oper ating the wick, is located.

In the bottom and top plates of said hollow plug, I

make some very small perforations, (too small for flameto pass through,) or make an orifice and cover it with wire gauze, so that any oil that may flow,over the top of the wick-tube will run back into the oil-cup, and so that any gas generated in the oil-cup will pass through said plug, and ascend to the flame through the burner.

A is'a bell-shaped case, which surrounds the wicktube, as shown in fig. 1.

B is a ring, with radial arms, extending inward to I the collar surrounding the plug a, and attached thereto, or to the body of the lamp; or, instead'of an open ring, it may be a perforated plate, with a central orifice for the plug a and the collar topass through.

On the upper side of this ring, or the periphery of the perforated plate, (as the case may be,) an annular flange rises, forming a seat for the base of the hellshaped case A, which is not attached by any fastening, but merely sits in said seat, so that it can be removed by merely lifting it off, and replaced in like manner.

Within said bell-shaped case A, I place an inner case, 0, of brass or copper, which, at its top, conforms substantially to the shape of the wick-tube, as shown 1 clearly in fig. 2.

This inner case flares a little down to the point 0, about midway of the \viok-tube,fron1' which point downward its four sides separate, forming Wings 0, which are bent outward, so that they will come in contact with the outer case A, at its base, to which they are attached at the points a, by any suitable fastening, so as to form a rigid connection between said outer and inner cases. These flaring wings are perforated, so that the air will freelypassth rough them.

The top of the bell-shaped case A is in the form of an ordinary dome-deflector, with an open slot, s, in

its apex, of the usual-form.

The open top of the inner case 0 is in the form of a slot, of about the same. width as the slot s in the outer case, and nearly but not quite as long.

The sides of" said slot-shaped opening in the top of G rise a little above the base of the slot s, but the ends are concaved, as shown at i, fig. 1, so that they do not rise quite to the level of the base of the slot s. This leaves a narrow space all around the wick-tube for the air to pass from the interior of G to the flame.

The sides of Q should also rise a little above the top of the wick-tube, but the burner should be adjust able vertically, as a slight change in the relative positions of the top of O and the top of the wick-tube will materially modify the flame, and the precise position at which the burner should stand relatively to the top of the wick-tube, to produce the best eflect, can only be ascertained by experiment.

This adjustability may be effected by means that will readily be suggested to any competent mechanic.

If the burner is so high that the capillary attraction will not cause suflicient oil to rise from below its base to the flame, the defect can easily be obviated by bringing the lower portion of the case A down around the body of the lamp, thus shortening the wick-tube, or the distance between the oil and the top of the wick-tube.

The oflice of the innencase' C, with its flaring, perforated wings O, is to conduct heat from the flame down within the hell-shaped case A, and thereby cause an ascending current of air through the same, to feed the flame. I

. It is manifest that said inner case 0, instead of being divided into four diverging wings, as described, might be made in the form of a continuous bell-shaped case from top to bottom, the lower and most flaring portion being perforated like the wings 0', without changing the principle or the effect of the burner.

This burner, applied to any ordinary oil-lamp, will cause kerosene-oil to burn therein with as clear and white at flame, as free from smoke or smell, as can possibly be produced by means of a glass-chimney.

A glass globe or, shade may be added, if desired, but

will not be necessary to produce a clear white flame, as above described.

The outer case'A may be made wholly of brass; but I propose to make the lower portion of. it, from the point x x, of porcelain, or stained or opaque glass, attaching thereto a metal, dome-deflector, of ordinary form. I prefer to make said case A, in whole or in part, of porcelain or glass, on account of said substances becoming less heated than metal. But, even if made wholly of brass, it will not become so hot but that it may be removed by the hand, without serious inconvenience.

I am aware that attempts have heretofore been made to construct burners that would burn keroseneoil without a chimney, by means of double cones, not differing materially in dimensions (except in height) from ordinary cones, the inner cone servingas a conductor of heat, to create an upward current of air -to the flame, and the outer cone being perforated around itscircumference, near the base, but having a closed bottom. All these attempts, however, have proved unsuccessful, and have been abandoned, so faras I am advised.

In any burner thus constructed, the heat within the cones will become so intense, that after burning a short time, the flame will be liable to pufi' out, owing,

as I suppose, to the heated gas within the cone be coming ignited. v

I completely obviate this difliculty by means of my bell-shaped outer case, with its broad open or perforated bottom, admitting so large a volume of cold air within it that an ample supply of air will be fed to the flame, without generating within said case a degree of heat at all detrimental to the flame.

Having thus fully described my invention and its operation,

What I claim as new, and desire to secure by Let ters Patent, is-- The bell-shaped case A, with its broad open or-perforated bottom, in combination with the inner heatconducting case 0, constructed and arranged substantially as and for the purpose set forth.

Witnesses: H. M. BEIDLER.

J. J. Goomss, J os. L. O0oMBs. 

